v3.10.0.1

SHARE-BASED COMPENSATION - Other Award Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Significant ranges of outstanding and exercisable options [Line Items] |  |  |  |  |
Number of options outstanding | 823,347 |  | 823,347 |  | 883,347
Weighted average remaining contractual life options outstanding |  |  | 1 year 9 months 18 days |  |
Weighted average exercise price options outstanding | $ 8.75 |  | $ 8.75 |  | $ 8.38
Number of options exercisable | 823,347 |  | 823,347 |  |
Weighted average exercise price options exercisable | $ 8.75 |  | $ 8.75 |  |
Recognized Non-Cash Compensation Expense [Line Items] |  |  |  |  |
Total Non cash compensation expense recognized | $ 2,951 | $ 982 | $ 6,055 | $ 2,067 |
Exercise prices from 1.34 to 1.34 |  |  |  |  |
Significant ranges of outstanding and exercisable options [Line Items] |  |  |  |  |
Number of options outstanding | 251,937 |  | 251,937 |  |
Weighted average remaining contractual life options outstanding |  |  | 7 months 6 days |  |
Weighted average exercise price options outstanding | $ 1.34 |  | $ 1.34 |  |
Number of options exercisable | 251,937 |  | 251,937 |  |
Weighted average exercise price options exercisable | $ 1.34 |  | $ 1.34 |  |
Exercise prices from 2.02 to 13.98 |  |  |  |  |
Significant ranges of outstanding and exercisable options [Line Items] |  |  |  |  |
Number of options outstanding | 571,410 |  | 571,410 |  |
Weighted average remaining contractual life options outstanding |  |  | 2 years 3 months 18 days |  |
Weighted average exercise price options outstanding | $ 12.02 |  | $ 12.02 |  |
Number of options exercisable | 571,410 |  | 571,410 |  |
Weighted average exercise price options exercisable | $ 12.02 |  | $ 12.02 |  |
Station operating expenses [Member] |  |  |  |  |
Recognized Non-Cash Compensation Expense [Line Items] |  |  |  |  |
Total Non cash compensation expense recognized | $ 1,680 | 372 | $ 3,643 | 577 |
Corporate general and administrative expenses [Member] |  |  |  |  |
Recognized Non-Cash Compensation Expense [Line Items] |  |  |  |  |
Total Non cash compensation expense recognized | 2,050 | 1,105 | 4,010 | 2,494 |
Stock-based compensation expense included in operating expenses [Member] |  |  |  |  |
Recognized Non-Cash Compensation Expense [Line Items] |  |  |  |  |
Total Non cash compensation expense recognized | 3,730 | 1,477 | 7,653 | 3,071 |
Income tax benefit (net of a fully reserved valuation allowance for prior year) [Member] |  |  |  |  |
Recognized Non-Cash Compensation Expense [Line Items] |  |  |  |  |
Total Non cash compensation expense recognized | $ 779 | $ 495 | $ 1,598 | $ 1,004 |

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